Xenassiminea Nana: New Genus and Species of Assimineidae from Japan

In Japan, a peculiar gastropod species was discovered more than three decades ago, gaining attention upon being labeled as "vulnerable" or "near threatened" in several government and local red lists. This species, referred to as Ka-wa-tare-kawa-zanshō in Japanese, remained undescribed until recent efforts sought to rectify this omission.